Heel grooving machine



March 26, 1940. a AT; 2,195,104

HEEL GRODVING MACHINE Filed Nov. 8, 1937 3 Sheets-Sheet 1 March 26, 1940. WATT 2,195,104

HEEL GROOVING MACHINE Filed Nov. 8, 1937 s Sheets-Sheet s Patented Mar. 2 6, 1940 I I PATENT FFICE HEEL onoovmo MACHINE.

George T, Watt, Havel-hill, Mass, assigno'r to Pope MachineryfCorporation, Haverhill, Mass, a'corporation of Massachusettsv Application November s, 1937, Serial No. 173,352

140mm. (on. 12-411) f v This invention relates to machines for making wood heels and more specifically tomachines for grooving or shaping the entire breast and shank lip surfaces of heel blanks for so-called Louis heels. first to be performed on the sawed-out heel blanks.

Expensive automatic grooving machines have been developed for doing this work, but it is an cost which will produce an equal quality of work at a favorable cost to the user. 1

The under side ofj'the shank lip of a Louis heel is convexly curved to match the concave curvature of the subsequently' formed heel seat on heels of different sizes without afiecting the p so that a very slightly blunted arcuately curved edge is produced alongthe end of the shank lip of the finished heel. The various sizes of blanks in an ordinary factory order require correspondingly various radii of curvature at the under side of the shank lip so that auniform lip thickness cut meet the turned surfacesubsequently made on the blank as determined by the sizeof the .heel. It is another objectof the presentinven- 'tion to provide a machine having. means adjustable to obtain the desired shank-curvature center thickness of the shank lip.

Other objects of the invention willbe apparent from the following description in conjunction with accompanying drawings in which,

Fig. l is a side view of "a machine embodying my invention; x 1

Fig. 2 is a plan view of the same exceptthat there is no blank clamped in the holder with the work holder rotated 90 in a clockwise direction and with the tool shown in its surface-ot-revolu- .tion form;

Fig. 3 is an isometric view of the work holder seat plate and side support'assembly;

I Fig; 4 is a heel blank as it comes to the groover; Fig.5 is a similar blank after grooving; and

open to receive a heel blank. r

The machine illustrated in'the accompanying drawings comprises a frame ll] having a hori-.

zontal table II and spacedcolumns 12, I3 and I4 projecting upward from the table. A motor I5, is secured to the frame l0 beneath the table This grooving operation is usually the.

blank dischargechute 24-is secured upon the table .the columns l2 and I 3 by brackets 40 secured'to the columns by bolts 4L. The plate 35 is held in its adjusted position by a bolt'42 passing through .an elongated slot 43 in the plate 35and engaging Fig. 6 is a partial side View showing WOIkIlOldBI .relative sliding movement between the beam 5| and the bracket 50.

. tally disposed spindle l9 mounted in bearings 28 secured. onthe table' II. A tool 2i, which is shown in Fig. 2 in its surface-of-revolution form, comprisesa pair of grooving cutters 22, Fig. 1, and a pair of lip trimmingcutters 23. A heel 5 H by screws 25. 1 A bracket 25 is mounted for horizontaladjustment' upon the top of the table Hand is normally'heldin its'adjusted position by a bar 21 held against the bracket by a bolt 28 :passing through the bar and engaging the table H.-- A plate 29 carrying a heelbreast stop 30 is .adjustably mounted in verticallyextending ways 3i in the bracket 26 andis held in its adjusted position by a bolt 32 passing through an elongated slot 33 in the bracket 25 and engaging the plate A horizontal plate- 35 istsupported for horizontal adjustment upon the top of the columns l2, l3 and I4 and is provided with aligned key 20 1 ways 35 and31parallel to the axis of the spindle l9 and'adapted to'engage keys 38 and 39 fixed in the top of the columns I3 and. I 2 respectively.- Thef pl'ate 35 is held against'the top surface of the column [4. An index pointer 44 projects from the edg'eof the plate 35 over a'scale 45upon the top of the column I4. The plate 35 is provided .withahollow vertically extending cylinder 46, the inner wall of which is provided with spaced annular recesses. to receive bearings 41 which rotatably support a shaft 48." The shaft 48 is held against axial movement by. a nut 49 threaded upon the shaft 48 and engaging the upper bearing 47. The shaft 48 is positioned so that its axis is perpendicular to the axis of the-spindle l9. An

offset bracket 50 is secured upon the lower end of the shaft 48 and adjustably' supports a work holder'beam 5|. The beam 5! is'held in its adjusted position by bolts 52 passing through slots 53 in the bracket 50 and engaging the beam 5|. A spring 54 surrounds each of the bolts 52 with one end engaging the head of the bolt and the other end engaging the bracket 50.. When the bolts 52 areslightly' loosened, the springs 54 act to hold the parts together to exclude/dirt but allow for upon the beam 5|". The bracket 55 is normally 55 is provided with dovetail ways adapted to slidably held in its adjusted position by bolt 58: passing through elongated slot 59 in the bracket and engaging the beam 5L The bracket 55-(Fig. 2)

receive a dovetail slide, 60 carried by a plate 6|. The slide 6% is vertically adjustable in theways by a collaredscrew 62 rotatably mounted in the slide til and engaging the bracket 55.. .The slide GE! is held in its adjusted position by a set screw 53 engaging the slide 60. A heel blank seat'engaging plate G4- is mounted for adjustment in horizontally extending ways formed in the plate 6 I. The position of the plate 64 maybe adjusted by a collared screw 65 rotatably mounted in a lug projecting from the plate, 6i and engaging the plate 54.. The plate 64 normally is held in its adjusted position by a set screw 66 carried by the plate 6!! and adapted to engage the plate 64. Extending perpendicular from the plate 64 is projection 69 having vertical ways for receiving for slidable adjustment therein. a heel blank side support .61. The support 61 is heid in its adjusted position by a screw 6.8 passing through an elongated slot (not shown) in the projection 63 and engaging the support 61. A lip support It is slidably mounted in dovetail ways 'II in the plate Bil the edge of which is adapted to be engaged by the bevelled edge of a plate 12 which is secured in positionagainst the support I0 by a screw I3. which may be engaged by the tool 2I without injury thereto such, for example, as fibre or Babbitt metal. The surface of the support In is aligned with the heel'seat engaging surface 0 the plate 64. A heel blank top lift engaging jaw is carried by a bracket 8| which is adjustably mounted upon the beam 5| and is held in its adjusted position by bolts 82 passing through slots ,83 in the bracket 8i and engaging the beam 5I. The jaw $9 is slidably mounted upon the bracket 8| between spaced guides 84 upon the'latter and is held in slidingengagement with the bracket IN by a bolt 85 passing through an elongated slot in the jaw 8i and engaging the bracket 8!. A manually operable lever 86 is pivotally mounted upon a bolt' 8'! fixed upon the bracket 8|. inner end portion 88 of the lever 66 forms one link of a toggle and is pivotally connected to the other link 8d of the toggle by a pin 90. The toggle link 89 is pivotally connected to the jaw 80 by a pin 9i and comprises a yoke 92 carrying spaced bolts 93 which pass through and slidably engage one end of a member 94, the other end of when is pivotally connected to the pin 9|; A spring 95 surrounds each of the bolts 93 with one end engaging the yoke 92 and the other end engaging the member '94. The downward movement of the lever, 86 is limited by a stop 96.

A locking mechanism is provided for holding the heel blank holder in desired relation to the tool 2i while adjusting the position of the shaft :38 to change the radius of the are through which the, heel blank is moved past the tool 2|. This mechanism comprises an arm 91 pivotally m0unted upon a fixed bracket 98 to swing in; a vertical plane into and out of its operative substantially horizontal position, the latter being determined by a stop screw '99. The free end portion I04 of the arm at serves as a clamp jaw adapted to engage a lug It!) projecting upward from the Y beam 55. Aleve-r Ifll is pivotally mounted upon a pin m2 carriedby the arm 91 and is arranged to swing in a plane perpendicular to theplane of pivotal refinement of the arm .91. The arm The support 10 is formed of a material H13 of the'lever lilI serves as a clamp jaw adapted to cooperate with the jaw N84- to engage the lug I80 and hold the work holder in a desired position in relation to the tool ZI. The jaw I03 is moved toward and away from the jaw I04 by a of the invention to form the breast b of. the heel (Fig. 5) and the convex shank s.

The machine also smooths the lip L of the shank. It is customary in wood heel manufacture to maintain a uniform centerfthickness of lip, as indicated by the line C in Fig. 5 on all sizes of heels of a given style. 1

In theoperation of the machine the heel blank holder is moved to a position over the breast stop 36 as shown in Figs. 1 and 3. The lever 86 is moved upward to the position shown in Fig. 6, andthe heel seat and breast Gr of the blank B are placed in engagement with the plate 64 and stop 3i? respectively and with the side of the blank engaging the support 61. The lever 86 is then moved downward in engagement with the stop 96' as shown in Fig. l to cause the jaw 80 to engage the top lift surface T of the heel and clamp the blank in the work holder. The work holder then is rotated about the axis of the shaft %8 to move the heel blank past and in operative relation to the tool ZI and return the work holder to its initial position. The lever 36 then is moved upward to the position shown:-

in Fig. 6 to permit the grooved blank to drop by gravity into thedischarge chute 24. The position of the blank in the work holder may be adjusted so that the curved lip portion of the groove will be centered on the blank by adjusting the position ofuplate 64 Such adjustment moves the side support 6'! and the lip support I0 so that the lip support and the side support remain in fixed relation to each other and the heel seat engaging plate 64 through the series of adjustments necessary to center the groove on the various sizes of blanks in any given order. Support for the edge of the shank lip is required onlyon that sideoithe lip at which the cutter cuts out through the seat surface of the blank.

Unless supported very close to the cutter at this pointthe wood is frequently fractured and splintered to a damaging. extent. The opposite side of the lip needs no close support because at that point the cutter is cuttingon to the blank towards solid uncut wood. At the start of an order I of blanks'the operator adjusts lip support I0, if

necessary, by looseningscrew 13 so the cutter will just shave the end 'of the support at the .end adjacent .the side support 61 after which it is usually possible to groove all sizes without furtherqattention to the lipsupport because the edge of the lip needing support maintains a nearly constant distance from the adjacent side of the blankjonall sizes.

Inasmuch as the widthof the shank lips vary while the center thickness remains the same on the different sizes and-as the groove must always meet the seat'surface at the sides as shown in Fig. 5, it is evident that the curvature of the shank lip must vary with'thesizes of heel. This is accomplished in the machine illustrated by changing the distance from theaxis of theshait 48 to the tool 2| forming the convex'curvature j of the shank. To this end the operator positions i .the' work-holderover the tool aszshownin; Fig, 2

He'then locks the work holder beam by clamp-1 to-ehange the position of itsaxis of rotation with zing lug 100 between; clamp jaws lll3jand-jlfl4.

When the work holder is thus locked it will be noted that ,theheel seat engaging surface of the -.plate 64' is perpendicular to aplane' through the J axes of rotation of the shaft 48 and thetool 2L aI-Ie, then loosens bolt 52 slightly so-that' the-work holder assembly isslidable onits bracketillr Bolt engaging plate 6 4 is 1I'1aintained.

Breast stop3l! determines the depth to which the tool cuts into the-blank. Bolt 3Zp'ermits adjustment of thisstop so that lip trimming cutters 23 just smooths the surfacefof the lip; The

breast stop is adjustably fixed on the frame'of the machine so that it actsonly to position the blank for clamping. Thus, the breast stop is positioned at all times at the blank loading position of thework holder.

, I claim: r

, 1. Inaheel blankbreastingma'china incombination; a frame, a .toolrotatably carried by said frame}- a' carrienmovably mounted upon said frame,-'a heel blank holder mounted upon said carrier .to permitamovement parallel to; a given plane and-in operativerelation to said tool, said wheel blank holder including a heelblank seat surface engaging member and a'heel blank side sup;- port arranged to prevent movement relative to one anotherinadirection parallel to said plane, and means, permitting simultaneous adjustment of; said member and support in a direction par-' allelto said plane, said holder ,also including a heel shankpedge -support carried by said member.

2. In a heel blank breasting machine, in combination, a frame, a tool rotatably carriedby said .frame,- a heel breast stop secured upon said frame,

a carrier movably mounted upon said frame, a heel blank holder mounted upon said carrier, to permit movementparallel to a given plane from I a position inoperative relation to saidbreast tion parallel to said plane, said holder. also in-' eluding a heel shank edge support carriedbysaid.

stop past andin operative relation to said tool, said heel blank holder including a heel blank seat surface engaging member and a heel blank side support arranged to prevent movement relative to one another in a direction parallel to said plane, and means permitting simultaneous adjustment of said member and support in a direcmember.

' 3. Ina heel blank breastingmachine, in com bi'nation, a frame, a' tool rotatably carried by said' frame, a rotatable member mounted upon said frame, means permitting adjustment of said memher in a direction parallel to a plane perpendicular toits axis ofrotation; said axis of rotation 'being perpendicular to the axis of rotation of said tool, a heelblank holder adjustably carried by saidmember' so that a heel blank carried by saidholder may be moved in a plane parallel to the axis of rotation of said tool byisaid membnpast and in operative relation to said tool,fand means 7 for locking said holderin a given relation to said tool while the position of said member is adjusted relation to said holder. q

4; In a heel blank breasting machine, in" combination, a frame, a tool rotatably carried'iby said frame, a rotatable member mounted upon :said frame, 1 means permitting adjustment of said member in a direction-parallel to a planeperpendicular to its axis of rotation, said axis of rotation being perpendicular to l the axis of rotation of said tool, a heel blank holder ,adjustably carried by said member so that a heelblank carried by said holder maybe. moved in a plane parallel to the-axis of rotation of said'tool by said memher past and in operative relation tosaid tool, means for lockingsaid'holder in a givenrelation' to said tool 'while' the position of said member is adjusted to, change the position of itsaxis of .rotation ,with relation to said holder, and a heel breast stop adjustably secured to said'frame,

5. In a heel blank breasting machine, in combination,-a frame, a tool rotatably carried bysaid frame, a-rotatable member mounted upon saidframe, means permitting-adjustment of said member in a direction parallel to a plane perpenid cular to its axis of rotation, said axis of rotation being perpendicular to the axis of rotation of said tool, a heel jblank holder adjustably carried' by saidmember so {that aheel blank carried by said holder may be movedin a plane parallel to the axis of rotation of said-tool bysaid member. past and in operative relation to said tool, and

means for locking said holder in a given relation to'said tool whilethe position of saidmember is adjusted to change the positionof its axis ofroholder including a heel blank seat surface engaging member arid aheelblank side support f arranged to prevent movement relative to one. another in a directionparallel to saidplane while permitting simultaneousjadjustment of said memher and support .in a direction parallel tosaidplane and perpendicular to the direction of said a change in positionof theaxis of rotation of said member. i

6. In a heel blank breasting machine, in combination, a frame, a tool rotatably carried by said-frame, a rotatable member mounted upon i said frame, means permitting adjustment ofsaid member in' a direction parallel to a plane perpendicular to its axisof rotation, said axisof tation of said tool, a heel blank'holde'r adjustably carried by said member so that a heel blank carried byfsaid holder may be moved in a plane parallel to the axis .of rotation of said tool by said member past'and inoperative relation to said tool, means for locking said holder in a given/relation to said tool while the position of said memrotation .being perpendicular to the axis of roher is adjusted .to change the" position of its axis of rotation with relation to, said holder, said'blank holder including a heelblank seat surfacefenigaging member and a heel blank side-support arranged to prevent movement'relative to one another in a direction parallel tosaid plane while permitting simultaneousadjustme'nt of said mem-- her and support in'a direction parallel to said plane and perpendicular to 'thejdirectio'n of said change in position of the axisof rotation of said member, a-heel breast stop secured to said frame,

and means foradjusting the positions of said member and support relative to said stop in a direction perpendicular to 'saidplane; v

v'7. In a heel blank breasting machine-"in combination, a frame, a tool rotatably carried by said frame, a movable carrier adjustably mounted tation with relation to said holder, said blank an arcuate path past saidtool to bring a heel blankcairied by said holder in operative relationv to said tool, and means for locking said blank holder in a given relationto said tool .While the position of said carrier isadjusted on said fran'ie to change the curvatureof the arcuate path travelled by saidholder.

8. In a heel blank breasting' machine, in combination, a frame, a tool rotatably carried by said frame, a rotatable member mounted upon said frame, means permitting adjustment of the axis of rotation of said -member along a line formed by the intersection of aplane' through its axis of rotation and the axis of rotation of said tool with a plane parallel to. the axis of said tooland perpendicular to the axis of rotation of said member, a heel blankholder adjustably carried by said member so that a heel blank carried by said holder may be moved in a plane parallel to the by the intersection ofa plane through its axis of rotation and the axis ofrotation'of said tool with a plane parallel tothe axis of said tool and'perpendicular to the axis of rotation of said member, a heel blank holder adjustably carried by said. member so that a heel blank carried by said holder may be moved in a plane parallel to the axis of rotation of said'tool by said member past andin operative relation to said tool, said holder having a heel blank seat engaging surface adapted to be positioned perpendicular to a plane throughthe axes of rotation of said member and said tool, and means for locking said holder'with upon said frame, aqheel blank holder adjustably v its heel blank seat engaging surface in said'permounted upon said carrier so asto be moved in 'pendicularposition. I j 1 0. In a heel blank breasting machine, in com-f bination, a br'easting tool, a blank holder rotatable to swing said holder past said tool, said hold:

er comprising a combined seat surface clamping jaw and blank side support, said combined'jaw and support being adjustable as a unit'crosswise of the holder, and a toplift surface clamping jaw.

ll; Ina heel blank breasting machine, jin combination,a breasting -tool, a blank holder rem-- able to swing said holder past said tool, said-holdbination, a breasting tool, a blank holder -movable to carry said holder' past the tool, said'h'older comprising a'combined unitary heel seat surface clamping jaw and blank side support, a removable shank lip edge support. carried by said jaw,

-and a topliftsuriace clamping jaw".

13.. In a heel blank breastin'g machine, in combination, a breasting-tool, a blank holder movable to carrysaid holder past the tool,'said holder iomprisin'g a combined unitary heel seat surface 7 support being adjustable. a unit, crosswise of clamping jaw and blank side-support, a removable shank lip edge support carried by said jaw, said combined jaw,l side support and shank lip the holder, and a toplift surface'clam'ping jaw.

14. In a heel blank breasting machine, in eombination, a breasting tool, a' blank holder movable to carry said holderpast the tool, said holder comprising 'a combined unitary heel seat surface clamping jaw and blank side support, a removable shank lip edge support carried by'said' jaw,

said'combined jaw, side support and shank lip support being adjustable as a unitfcr'osswise of theholder, a toplift surface clamping jaw, and a fixed breast stop. i

- GEORGE: T. WATT. 

